Recovery ROM [Method o1] is the easiest method to flash Rom on any device but sometime it may possible that you will get error on your device or may be Recovery ROM will not install on your device. On that time you have to use fastboot ROM flashing method to flash Xiaomi ROM on your device. Fastboot ROM flashing is 100% working method without any effort.

This is all about how to download Xiaomi Redmi 3S MIUI 9 Global Beta ROM and install MIUI 9 Global Beta ROM on Xiaomi Redmi 3S mobile?Now you can root your device, if you want to tweak your device as a advance developer. Go through the link for different root guide and android tweaks.